/**
 * Copyright (c) 2013-2022 Nikita Koksharov
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.redisson;

import java.util.concurrent.CompletableFuture;

/**
 * 发布-订阅模型中的一个重要组件
 */
public interface PubSubEntry<E> {

    /**
     * 获取锁
     */
    void acquire();

    /**
     * 释放锁
     */
    int release();

    /**
     * 处理异步操作的结果
     */
    CompletableFuture<E> getPromise();

}
